GB1087210A - Cathode ray oscilloscopes - Google Patents

Cathode ray oscilloscopes

Info

Publication number
GB1087210A
GB1087210A GB53895/65A GB5389565A GB1087210A GB 1087210 A GB1087210 A GB 1087210A GB 53895/65 A GB53895/65 A GB 53895/65A GB 5389565 A GB5389565 A GB 5389565A GB 1087210 A GB1087210 A GB 1087210A
Authority
GB
United Kingdom
Prior art keywords
output
generator
gate
supplied via
amplitude
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB53895/65A
Inventor
Tomas Hornak
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Vyzkumny Ustav Matematickych Stroju
Original Assignee
Vyzkumny Ustav Matematickych Stroju
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Vyzkumny Ustav Matematickych Stroju filed Critical Vyzkumny Ustav Matematickych Stroju
Publication of GB1087210A publication Critical patent/GB1087210A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R13/00—Arrangements for displaying electric variables or waveforms
    • G01R13/20—Cathode-ray oscilloscopes
    • G01R13/22—Circuits therefor
    • G01R13/34—Circuits for representing a single waveform by sampling, e.g. for very high frequencies
    • G01R13/342—Circuits for representing a single waveform by sampling, e.g. for very high frequencies for displaying periodic H.F. signals

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Details Of Television Scanning (AREA)
  • Manufacture Of Electron Tubes, Discharge Lamp Vessels, Lead-In Wires, And The Like (AREA)

Abstract

1,087,210. Cathode-ray oscilloscopes; semiconductor circuits. VYZKUMNY USTAV MATEMATICYKCH STROJU. Dec. 20, 1965 [Dec. 23, 1964], No.53895/65. Headings H3T and H4T. In a sampling oscilloscope for analysing recurrent A.C. waveforms by displaying samples of the latter as (vertical) deflections of a (horizontal) time base, the time base voltage is produced in discrete steps, each of which is synchronized with a sampling pulse but of random amplitude. Referring to Figs. 4, 5 and 6, the random amplitude time base generator comprises a free-running sawtooth wave generator (301) utilizing a PNPN diode (D 1 ), the output being supplied via a gate (302) to a storage circuit (303) including a transistor (Q1) in an emitter follower circuit providing, when the gate is periodically opened, a succession of random amplitude pulses (E R ) for application to the horizontal deflection plates of the oscilloscope tube 107. These pulses are also supplied via an adjustable attenuator (112) to an adding circuit (110) in which they are combined with an adjustable voltage from source (111), the output of the adding circuit being fed as a reference voltage to an amplitude comparison circuit 108 having as second input a sawtooth wave from generator 102 triggered (at 101) by a pulse derived from the recurrent waveform (Ea, Fig. 1, not shown). Amplitude coincidence of the two inputs then results in an output which is utilized to produce sampling pulses in generator (103) for controlling a gate (104) to which the recurrent waveform is supplied via terminal 100. The output samples are then amplified in a wide band amplifier 105 and supplied via a pulse stretcher 106 to the vertical deflection plates of the tube (107) and over lead 201 to a blocking-oscillator pulse generator (304), the output of which controls gate 302. Adjustment of the voltage source (111) determines the time position (with respect to the commencement of a cycle of the recurrent waveform) of the portion to be displayed whilst adjustment of the attenuator (112) determines the width of such portion.
GB53895/65A 1964-12-23 1965-12-20 Cathode ray oscilloscopes Expired GB1087210A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CS730864 1964-12-23

Publications (1)

Publication Number Publication Date
GB1087210A true GB1087210A (en) 1967-10-18

Family

ID=5421950

Family Applications (1)

Application Number Title Priority Date Filing Date
GB53895/65A Expired GB1087210A (en) 1964-12-23 1965-12-20 Cathode ray oscilloscopes

Country Status (3)

Country Link
US (1) US3456189A (en)
FR (1) FR1464975A (en)
GB (1) GB1087210A (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL168944C (en) * 1969-05-26 Tektronix Inc DEVICE FOR DISPLAYING A PERIODICALLY OPERATING ELECTRICAL SIGNAL ON THE DISPLAY OF A CATHODE RAY OSCILLOGRAPH.
US4142146A (en) * 1975-07-07 1979-02-27 Nicolet Instrument Corporation Digital apparatus for waveform measurement
US4283713A (en) * 1979-01-15 1981-08-11 Tektronix, Inc. Waveform acquisition circuit
US4654584A (en) * 1985-12-12 1987-03-31 Analogic Corporation High-speed precision equivalent time sampling A/D converter and method
US5122734A (en) * 1990-07-19 1992-06-16 Tektronix, Inc. Method and apparatus for prescaler desynchronization
US5243343A (en) * 1990-12-03 1993-09-07 Zeelan Technology, Inc. Signal acquisition system utilizing ultra-wide time range time base
US5115189A (en) * 1991-02-06 1992-05-19 Hewlett-Packard Company Anti-aliasing dithering method and apparatus for low frequency signal sampling

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL233826A (en) * 1957-12-03
US3010071A (en) * 1960-05-19 1961-11-21 Hewlett Packard Co Sweep circuit
US3248655A (en) * 1962-05-07 1966-04-26 Tektronix Inc Ratchet memory circuit and sampling system employing such circuit
GB1051903A (en) * 1963-02-18
US3244989A (en) * 1963-08-13 1966-04-05 Hewlett Packard Co Oscilloscope sweep circuits

Also Published As

Publication number Publication date
US3456189A (en) 1969-07-15
FR1464975A (en) 1967-01-06

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